package com.hmdp.service.impl;

import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import com.hmdp.dto.Result;
import com.hmdp.entity.Shop;
import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.utils.RedisConstants;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {



    private final StringRedisTemplate stringRedisTemplate;

    public ShopTypeServiceImpl(StringRedisTemplate stringRedisTemplate) {
        this.stringRedisTemplate = stringRedisTemplate;
    }


    @Override
    public List<ShopType> queryTypeList() {
        String listJson = stringRedisTemplate.opsForValue().get(RedisConstants.CACHE_SHOP_TYPE);
        if (StrUtil.isNotBlank(listJson)){
            List<ShopType> shopTypes = JSONUtil.toList(listJson, ShopType.class);
            return shopTypes;
        }
        List<ShopType> shopTypes=query().orderByAsc("sort").list();
        if (shopTypes==null){
            return  null;
        }
        stringRedisTemplate.opsForValue().set(RedisConstants.CACHE_SHOP_TYPE, JSONUtil.toJsonStr(shopTypes));
        return shopTypes;
    }
}
